Juliette's silver multi-tool has been carried, exchanged, and used for delicate work; she leaves it behind to hear Lukas's news.
Juliette uses the smallest pick on her multi-tool to release an electrical tie without breaking it. Later, Lukas takes her silver, new-looking tool and leaves his own in its place.
Juliette subsequently carries her multi-tool in a pocket when leaving Mechanical. During the latest investigation she leaves it behind as she crawls out to hear Lukas's news.
The tool was described as silver and new-looking when Lukas exchanged it for his own.
It is Juliette's portable tool for practical work.
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